Troubleshooting - Bradley Keltech HL Serie Manuel D'installation

Installation
Basic Troubleshooting
Problem
The heater does not work or works intermittently .
Turn power OFF before recording any Ohm readings.
If the above steps do not solve the problem, some additional checks may be performed. Follow the
schematic to perform the following continuity checks:
 High temperature bimetals (Manual Reset Safeties) .
 Optional ground fault breaker must be in the closed position for the unit to work .
 All internal breakers must be in the ON position for the unit to work .
For additional information on Troubleshooting or other information, please call Keltech Inc . technical support at
1-800-999-4320 . Please have Model No . and Serial No . available when seeking technical assistance . Serial No .
tag is located in the enclosure on the upper left hand corner of the back plate . Please record and maintain this
information at all times:
HL- Model No.
Serial No.
Bradley • 215-1823 Rev. F; ECN 18-17-017
Solution
Flow switch works properly .
At the wires from the flow switch, ohm meter should read
Open without flow and Closed with flow .
Water flow through the heater is adequate to activate the
flow switch at 0 .5 gpm (1 .9 lpm) or at the low flow options
of 0 .15 (0 .6 lpm) or 0 .25 (0 .9 lpm) gpm .
Heater is wired with the proper breaker and wire size .
Refer to Electrical Specifications for Heater table in
section 3 for proper requirements .
Unit is receiving voltage from all 3 phases of the power
source . A load voltage reading is also helpful .
3/29/2018
HL-Series Tankless Heater
17